1 // SPDX-License-Identifier: GPL-2.0-or-later 1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /* 2 /*
3 * SHA-256, as specified in 3 * SHA-256, as specified in
4 * http://csrc.nist.gov/groups/STM/cavp/docume 4 * http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
5 * 5 *
6 * SHA-256 code by Jean-Luc Cooke <jlcooke@cer 6 * SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
7 * 7 *
8 * Copyright (c) Jean-Luc Cooke <jlcooke@certa 8 * Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
9 * Copyright (c) Andrew McDonald <andrew@mcdon 9 * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
10 * Copyright (c) 2002 James Morris <jmorris@in 10 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
11 * Copyright (c) 2014 Red Hat Inc. 11 * Copyright (c) 2014 Red Hat Inc.
12 */ 12 */
13 13
14 #include <linux/unaligned.h> !! 14 #include <linux/bitops.h>
15 #include <crypto/sha256_base.h> !! 15 #include <linux/export.h>
16 #include <linux/kernel.h> <<
17 #include <linux/module.h> 16 #include <linux/module.h>
18 #include <linux/string.h> 17 #include <linux/string.h>
19 !! 18 #include <crypto/sha.h>
20 static const u32 SHA256_K[] = { !! 19 #include <asm/unaligned.h>
21 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0x <<
22 0x3956c25b, 0x59f111f1, 0x923f82a4, 0x <<
23 0xd807aa98, 0x12835b01, 0x243185be, 0x <<
24 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0x <<
25 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x <<
26 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x <<
27 0x983e5152, 0xa831c66d, 0xb00327c8, 0x <<
28 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x <<
29 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x <<
30 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x <<
31 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0x <<
32 0xd192e819, 0xd6990624, 0xf40e3585, 0x <<
33 0x19a4c116, 0x1e376c08, 0x2748774c, 0x <<
34 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x <<
35 0x748f82ee, 0x78a5636f, 0x84c87814, 0x <<
36 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0x <<
37 }; <<
38 20
39 static inline u32 Ch(u32 x, u32 y, u32 z) 21 static inline u32 Ch(u32 x, u32 y, u32 z)
40 { 22 {
41 return z ^ (x & (y ^ z)); 23 return z ^ (x & (y ^ z));
42 } 24 }
43 25
44 static inline u32 Maj(u32 x, u32 y, u32 z) 26 static inline u32 Maj(u32 x, u32 y, u32 z)
45 { 27 {
46 return (x & y) | (z & (x | y)); 28 return (x & y) | (z & (x | y));
47 } 29 }
48 30
49 #define e0(x) (ror32(x, 2) ^ ror32(x, 13 31 #define e0(x) (ror32(x, 2) ^ ror32(x, 13) ^ ror32(x, 22))
50 #define e1(x) (ror32(x, 6) ^ ror32(x, 11 32 #define e1(x) (ror32(x, 6) ^ ror32(x, 11) ^ ror32(x, 25))
51 #define s0(x) (ror32(x, 7) ^ ror32(x, 18 33 #define s0(x) (ror32(x, 7) ^ ror32(x, 18) ^ (x >> 3))
52 #define s1(x) (ror32(x, 17) ^ ror32(x, 1 34 #define s1(x) (ror32(x, 17) ^ ror32(x, 19) ^ (x >> 10))
53 35
54 static inline void LOAD_OP(int I, u32 *W, cons 36 static inline void LOAD_OP(int I, u32 *W, const u8 *input)
55 { 37 {
56 W[I] = get_unaligned_be32((__u32 *)inp 38 W[I] = get_unaligned_be32((__u32 *)input + I);
57 } 39 }
58 40
59 static inline void BLEND_OP(int I, u32 *W) 41 static inline void BLEND_OP(int I, u32 *W)
60 { 42 {
61 W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15 43 W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
62 } 44 }
63 45
64 #define SHA256_ROUND(i, a, b, c, d, e, f, g, h !! 46 static void sha256_transform(u32 *state, const u8 *input)
65 u32 t1, t2; <<
66 t1 = h + e1(e) + Ch(e, f, g) + SHA256_ <<
67 t2 = e0(a) + Maj(a, b, c); <<
68 d += t1; <<
69 h = t1 + t2; <<
70 } while (0) <<
71 <<
72 static void sha256_transform(u32 *state, const <<
73 { 47 {
74 u32 a, b, c, d, e, f, g, h; !! 48 u32 a, b, c, d, e, f, g, h, t1, t2;
>> 49 u32 W[64];
75 int i; 50 int i;
76 51
77 /* load the input */ 52 /* load the input */
78 for (i = 0; i < 16; i += 8) { !! 53 for (i = 0; i < 16; i++)
79 LOAD_OP(i + 0, W, input); !! 54 LOAD_OP(i, W, input);
80 LOAD_OP(i + 1, W, input); <<
81 LOAD_OP(i + 2, W, input); <<
82 LOAD_OP(i + 3, W, input); <<
83 LOAD_OP(i + 4, W, input); <<
84 LOAD_OP(i + 5, W, input); <<
85 LOAD_OP(i + 6, W, input); <<
86 LOAD_OP(i + 7, W, input); <<
87 } <<
88 55
89 /* now blend */ 56 /* now blend */
90 for (i = 16; i < 64; i += 8) { !! 57 for (i = 16; i < 64; i++)
91 BLEND_OP(i + 0, W); !! 58 BLEND_OP(i, W);
92 BLEND_OP(i + 1, W); <<
93 BLEND_OP(i + 2, W); <<
94 BLEND_OP(i + 3, W); <<
95 BLEND_OP(i + 4, W); <<
96 BLEND_OP(i + 5, W); <<
97 BLEND_OP(i + 6, W); <<
98 BLEND_OP(i + 7, W); <<
99 } <<
100 59
101 /* load the state into our registers * 60 /* load the state into our registers */
102 a = state[0]; b = state[1]; c = stat 61 a = state[0]; b = state[1]; c = state[2]; d = state[3];
103 e = state[4]; f = state[5]; g = stat 62 e = state[4]; f = state[5]; g = state[6]; h = state[7];
104 63
105 /* now iterate */ 64 /* now iterate */
106 for (i = 0; i < 64; i += 8) { !! 65 t1 = h + e1(e) + Ch(e, f, g) + 0x428a2f98 + W[0];
107 SHA256_ROUND(i + 0, a, b, c, d !! 66 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
108 SHA256_ROUND(i + 1, h, a, b, c !! 67 t1 = g + e1(d) + Ch(d, e, f) + 0x71374491 + W[1];
109 SHA256_ROUND(i + 2, g, h, a, b !! 68 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
110 SHA256_ROUND(i + 3, f, g, h, a !! 69 t1 = f + e1(c) + Ch(c, d, e) + 0xb5c0fbcf + W[2];
111 SHA256_ROUND(i + 4, e, f, g, h !! 70 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
112 SHA256_ROUND(i + 5, d, e, f, g !! 71 t1 = e + e1(b) + Ch(b, c, d) + 0xe9b5dba5 + W[3];
113 SHA256_ROUND(i + 6, c, d, e, f !! 72 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
114 SHA256_ROUND(i + 7, b, c, d, e !! 73 t1 = d + e1(a) + Ch(a, b, c) + 0x3956c25b + W[4];
115 } !! 74 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 75 t1 = c + e1(h) + Ch(h, a, b) + 0x59f111f1 + W[5];
>> 76 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 77 t1 = b + e1(g) + Ch(g, h, a) + 0x923f82a4 + W[6];
>> 78 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 79 t1 = a + e1(f) + Ch(f, g, h) + 0xab1c5ed5 + W[7];
>> 80 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 81
>> 82 t1 = h + e1(e) + Ch(e, f, g) + 0xd807aa98 + W[8];
>> 83 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 84 t1 = g + e1(d) + Ch(d, e, f) + 0x12835b01 + W[9];
>> 85 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 86 t1 = f + e1(c) + Ch(c, d, e) + 0x243185be + W[10];
>> 87 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 88 t1 = e + e1(b) + Ch(b, c, d) + 0x550c7dc3 + W[11];
>> 89 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 90 t1 = d + e1(a) + Ch(a, b, c) + 0x72be5d74 + W[12];
>> 91 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 92 t1 = c + e1(h) + Ch(h, a, b) + 0x80deb1fe + W[13];
>> 93 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 94 t1 = b + e1(g) + Ch(g, h, a) + 0x9bdc06a7 + W[14];
>> 95 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 96 t1 = a + e1(f) + Ch(f, g, h) + 0xc19bf174 + W[15];
>> 97 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 98
>> 99 t1 = h + e1(e) + Ch(e, f, g) + 0xe49b69c1 + W[16];
>> 100 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 101 t1 = g + e1(d) + Ch(d, e, f) + 0xefbe4786 + W[17];
>> 102 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 103 t1 = f + e1(c) + Ch(c, d, e) + 0x0fc19dc6 + W[18];
>> 104 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 105 t1 = e + e1(b) + Ch(b, c, d) + 0x240ca1cc + W[19];
>> 106 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 107 t1 = d + e1(a) + Ch(a, b, c) + 0x2de92c6f + W[20];
>> 108 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 109 t1 = c + e1(h) + Ch(h, a, b) + 0x4a7484aa + W[21];
>> 110 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 111 t1 = b + e1(g) + Ch(g, h, a) + 0x5cb0a9dc + W[22];
>> 112 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 113 t1 = a + e1(f) + Ch(f, g, h) + 0x76f988da + W[23];
>> 114 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 115
>> 116 t1 = h + e1(e) + Ch(e, f, g) + 0x983e5152 + W[24];
>> 117 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 118 t1 = g + e1(d) + Ch(d, e, f) + 0xa831c66d + W[25];
>> 119 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 120 t1 = f + e1(c) + Ch(c, d, e) + 0xb00327c8 + W[26];
>> 121 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 122 t1 = e + e1(b) + Ch(b, c, d) + 0xbf597fc7 + W[27];
>> 123 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 124 t1 = d + e1(a) + Ch(a, b, c) + 0xc6e00bf3 + W[28];
>> 125 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 126 t1 = c + e1(h) + Ch(h, a, b) + 0xd5a79147 + W[29];
>> 127 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 128 t1 = b + e1(g) + Ch(g, h, a) + 0x06ca6351 + W[30];
>> 129 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 130 t1 = a + e1(f) + Ch(f, g, h) + 0x14292967 + W[31];
>> 131 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 132
>> 133 t1 = h + e1(e) + Ch(e, f, g) + 0x27b70a85 + W[32];
>> 134 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 135 t1 = g + e1(d) + Ch(d, e, f) + 0x2e1b2138 + W[33];
>> 136 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 137 t1 = f + e1(c) + Ch(c, d, e) + 0x4d2c6dfc + W[34];
>> 138 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 139 t1 = e + e1(b) + Ch(b, c, d) + 0x53380d13 + W[35];
>> 140 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 141 t1 = d + e1(a) + Ch(a, b, c) + 0x650a7354 + W[36];
>> 142 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 143 t1 = c + e1(h) + Ch(h, a, b) + 0x766a0abb + W[37];
>> 144 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 145 t1 = b + e1(g) + Ch(g, h, a) + 0x81c2c92e + W[38];
>> 146 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 147 t1 = a + e1(f) + Ch(f, g, h) + 0x92722c85 + W[39];
>> 148 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 149
>> 150 t1 = h + e1(e) + Ch(e, f, g) + 0xa2bfe8a1 + W[40];
>> 151 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 152 t1 = g + e1(d) + Ch(d, e, f) + 0xa81a664b + W[41];
>> 153 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 154 t1 = f + e1(c) + Ch(c, d, e) + 0xc24b8b70 + W[42];
>> 155 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 156 t1 = e + e1(b) + Ch(b, c, d) + 0xc76c51a3 + W[43];
>> 157 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 158 t1 = d + e1(a) + Ch(a, b, c) + 0xd192e819 + W[44];
>> 159 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 160 t1 = c + e1(h) + Ch(h, a, b) + 0xd6990624 + W[45];
>> 161 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 162 t1 = b + e1(g) + Ch(g, h, a) + 0xf40e3585 + W[46];
>> 163 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 164 t1 = a + e1(f) + Ch(f, g, h) + 0x106aa070 + W[47];
>> 165 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 166
>> 167 t1 = h + e1(e) + Ch(e, f, g) + 0x19a4c116 + W[48];
>> 168 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 169 t1 = g + e1(d) + Ch(d, e, f) + 0x1e376c08 + W[49];
>> 170 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 171 t1 = f + e1(c) + Ch(c, d, e) + 0x2748774c + W[50];
>> 172 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 173 t1 = e + e1(b) + Ch(b, c, d) + 0x34b0bcb5 + W[51];
>> 174 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 175 t1 = d + e1(a) + Ch(a, b, c) + 0x391c0cb3 + W[52];
>> 176 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 177 t1 = c + e1(h) + Ch(h, a, b) + 0x4ed8aa4a + W[53];
>> 178 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 179 t1 = b + e1(g) + Ch(g, h, a) + 0x5b9cca4f + W[54];
>> 180 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 181 t1 = a + e1(f) + Ch(f, g, h) + 0x682e6ff3 + W[55];
>> 182 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
>> 183
>> 184 t1 = h + e1(e) + Ch(e, f, g) + 0x748f82ee + W[56];
>> 185 t2 = e0(a) + Maj(a, b, c); d += t1; h = t1 + t2;
>> 186 t1 = g + e1(d) + Ch(d, e, f) + 0x78a5636f + W[57];
>> 187 t2 = e0(h) + Maj(h, a, b); c += t1; g = t1 + t2;
>> 188 t1 = f + e1(c) + Ch(c, d, e) + 0x84c87814 + W[58];
>> 189 t2 = e0(g) + Maj(g, h, a); b += t1; f = t1 + t2;
>> 190 t1 = e + e1(b) + Ch(b, c, d) + 0x8cc70208 + W[59];
>> 191 t2 = e0(f) + Maj(f, g, h); a += t1; e = t1 + t2;
>> 192 t1 = d + e1(a) + Ch(a, b, c) + 0x90befffa + W[60];
>> 193 t2 = e0(e) + Maj(e, f, g); h += t1; d = t1 + t2;
>> 194 t1 = c + e1(h) + Ch(h, a, b) + 0xa4506ceb + W[61];
>> 195 t2 = e0(d) + Maj(d, e, f); g += t1; c = t1 + t2;
>> 196 t1 = b + e1(g) + Ch(g, h, a) + 0xbef9a3f7 + W[62];
>> 197 t2 = e0(c) + Maj(c, d, e); f += t1; b = t1 + t2;
>> 198 t1 = a + e1(f) + Ch(f, g, h) + 0xc67178f2 + W[63];
>> 199 t2 = e0(b) + Maj(b, c, d); e += t1; a = t1 + t2;
116 200
117 state[0] += a; state[1] += b; state[2] 201 state[0] += a; state[1] += b; state[2] += c; state[3] += d;
118 state[4] += e; state[5] += f; state[6] 202 state[4] += e; state[5] += f; state[6] += g; state[7] += h;
>> 203
>> 204 /* clear any sensitive info... */
>> 205 a = b = c = d = e = f = g = h = t1 = t2 = 0;
>> 206 memzero_explicit(W, 64 * sizeof(u32));
119 } 207 }
120 208
121 static void sha256_transform_blocks(struct sha !! 209 void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len)
122 const u8 * <<
123 { 210 {
124 u32 W[64]; !! 211 unsigned int partial, done;
>> 212 const u8 *src;
125 213
126 do { !! 214 partial = sctx->count & 0x3f;
127 sha256_transform(sctx->state, !! 215 sctx->count += len;
128 input += SHA256_BLOCK_SIZE; !! 216 done = 0;
129 } while (--blocks); !! 217 src = data;
>> 218
>> 219 if ((partial + len) > 63) {
>> 220 if (partial) {
>> 221 done = -partial;
>> 222 memcpy(sctx->buf + partial, data, done + 64);
>> 223 src = sctx->buf;
>> 224 }
>> 225
>> 226 do {
>> 227 sha256_transform(sctx->state, src);
>> 228 done += 64;
>> 229 src = data + done;
>> 230 } while (done + 63 < len);
130 231
131 memzero_explicit(W, sizeof(W)); !! 232 partial = 0;
>> 233 }
>> 234 memcpy(sctx->buf + partial, src, len - done);
132 } 235 }
>> 236 EXPORT_SYMBOL(sha256_update);
133 237
134 void sha256_update(struct sha256_state *sctx, !! 238 void sha224_update(struct sha256_state *sctx, const u8 *data, unsigned int len)
135 { 239 {
136 lib_sha256_base_do_update(sctx, data, !! 240 sha256_update(sctx, data, len);
137 } 241 }
138 EXPORT_SYMBOL(sha256_update); !! 242 EXPORT_SYMBOL(sha224_update);
139 243
140 static void __sha256_final(struct sha256_state !! 244 static void __sha256_final(struct sha256_state *sctx, u8 *out, int digest_words)
141 { 245 {
142 lib_sha256_base_do_finalize(sctx, sha2 !! 246 __be32 *dst = (__be32 *)out;
143 lib_sha256_base_finish(sctx, out, dige !! 247 __be64 bits;
>> 248 unsigned int index, pad_len;
>> 249 int i;
>> 250 static const u8 padding[64] = { 0x80, };
>> 251
>> 252 /* Save number of bits */
>> 253 bits = cpu_to_be64(sctx->count << 3);
>> 254
>> 255 /* Pad out to 56 mod 64. */
>> 256 index = sctx->count & 0x3f;
>> 257 pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
>> 258 sha256_update(sctx, padding, pad_len);
>> 259
>> 260 /* Append length (before padding) */
>> 261 sha256_update(sctx, (const u8 *)&bits, sizeof(bits));
>> 262
>> 263 /* Store state in digest */
>> 264 for (i = 0; i < digest_words; i++)
>> 265 put_unaligned_be32(sctx->state[i], &dst[i]);
>> 266
>> 267 /* Zeroize sensitive information. */
>> 268 memset(sctx, 0, sizeof(*sctx));
144 } 269 }
145 270
146 void sha256_final(struct sha256_state *sctx, u 271 void sha256_final(struct sha256_state *sctx, u8 *out)
147 { 272 {
148 __sha256_final(sctx, out, 32); !! 273 __sha256_final(sctx, out, 8);
149 } 274 }
150 EXPORT_SYMBOL(sha256_final); 275 EXPORT_SYMBOL(sha256_final);
151 276
152 void sha224_final(struct sha256_state *sctx, u 277 void sha224_final(struct sha256_state *sctx, u8 *out)
153 { 278 {
154 __sha256_final(sctx, out, 28); !! 279 __sha256_final(sctx, out, 7);
155 } 280 }
156 EXPORT_SYMBOL(sha224_final); 281 EXPORT_SYMBOL(sha224_final);
157 282
158 void sha256(const u8 *data, unsigned int len, <<
159 { <<
160 struct sha256_state sctx; <<
161 <<
162 sha256_init(&sctx); <<
163 sha256_update(&sctx, data, len); <<
164 sha256_final(&sctx, out); <<
165 } <<
166 EXPORT_SYMBOL(sha256); <<
167 <<
168 MODULE_DESCRIPTION("SHA-256 Algorithm"); <<
169 MODULE_LICENSE("GPL"); 283 MODULE_LICENSE("GPL");
170 284
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